fernly-usb-loader: Get rid of call to 'screen'
fernly-usb-loader: Get rid of call to 'screen'

Since we have an internal terminal of sorts, remove the call to 'screen'
when not running in monitor mode.

Signed-off-by: Sean Cross <dd28e116ed3e781f3ae781acae9fb18383f35c2f@kosagi.com>

urjaman/fernly,mandl/fernly,mandl/fernly,mandl/fernly,pfalcon/fernly,xobs/fernly,xobs/fernly,pfalcon/fernly,urjaman/fernly,urjaman/fernly